Chemical classification of Lower Vaal WMA 2006-12-18

Lower Vaal WMA

Chemical classification run on 2006-12-18 - 15:55:26

Program /prjws8/users/michael/aml/qatrivhtml.aml
Data file $WMSYS/wmdata/wq/MACRO061128.dat
Data selection dates 2001-01-01 to 2005-12-31
Programmer Michael Silberbauer
Institute for Water Quality Studies,
Department of Water Affairs and Forestry, Private Bag X313,
PRETORIA, South Africa 0001 - SilberbauerM@dwaf.gov.za

Note that qatrivhtml.aml includes monitoring points outside drainage region boundaries, within 500 metres of the boundaries, to allow for geographic errors. Thus, in some cases, the program may use the same monitoring point to classify two adjacent drainage regions.
Minimum number of samples used per classification = 5.
[explanation of classification process] [map] [chemical index page] [IWQS home page]

46 quaternary drainage regions overlap Lower Vaal WMA

(5) Catchment C31E: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C3H015Q01 0 Harts River: Banks Drift-Pipe Line From none

C3H014Q01 dam Schweizer Reneke Dam on Harts River: Rig none

Station	total n samples	description	map code
C3H015Q01	0	Harts River: Banks Drift-Pipe Line From	none
C3H014Q01	dam	Schweizer Reneke Dam on Harts River: Rig	none

(6) Catchment C31F: Total number of "H...Q" (flow gauging, quality) stations = 3.

Station total n
samples description map
code

C3H014Q01 dam Schweizer Reneke Dam on Harts River: Rig none

C3H017Q01 0 at Tlapeng Upstream of Taungdam on Harts none

C3H003Q01 833 at Taung on Hartsrivier 1

Station	total n samples	description	map code
C3H014Q01	dam	Schweizer Reneke Dam on Harts River: Rig	none
C3H017Q01	0	at Tlapeng Upstream of Taungdam on Harts	none
C3H003Q01	833	at Taung on Hartsrivier	1

C31F - Stations used: 2, Samples selected: 9 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 9 8.11 C3H003Q01 8.33 C3H003Q01 8.45 C3H003Q01 8.47 C3H003Q01 -log [H⁺]

Fluoride 9 0.21 C3H003Q01 0.4 C3H003Q01 0.45 C3H003Q01 0.46 C3H003Q01 mg l^-1

NO3(N) 9 0.04 C3H003Q01 0.04 C3H003Q01 0.202 C3H003Q01 0.763 C3H003Q01 mg l^-1

Sulphate 9 11.5 C3H003Q01 150.8 C3H003Q01 239.2 C3H003Q01 250.1 C3H003Q01 mg l^-1

Chloride 9 11.9 C3H003Q01 74.7 C3H003Q01 141.2 C3H003Q01 147.9 C3H003Q01 mg l^-1

Sodium 9 15.4 C3H003Q01 80.2 C3H003Q01 140 C3H003Q01 162.7 C3H003Q01 mg l^-1

Magnesium 9 8.3 C3H003Q01 31.8 C3H003Q01 59.1 C3H003Q01 65.1 C3H003Q01 mg l^-1

TDS 9 193 C3H003Q01 564 C3H003Q01 831 C3H003Q01 900 C3H003Q01 mg l^-1

Conductivity 9 24.6 C3H003Q01 81.1 C3H003Q01 123.5 C3H003Q01 124.2 C3H003Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C31F n=9 Class 1: I(SO4 Cl Na Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	9	8.11	C3H003Q01	8.33	C3H003Q01	8.45	C3H003Q01	8.47	C3H003Q01	-log [H⁺]
Fluoride	9	0.21	C3H003Q01	0.4	C3H003Q01	0.45	C3H003Q01	0.46	C3H003Q01	mg l^-1
NO3(N)	9	0.04	C3H003Q01	0.04	C3H003Q01	0.202	C3H003Q01	0.763	C3H003Q01	mg l^-1
Sulphate	9	11.5	C3H003Q01	150.8	C3H003Q01	239.2	C3H003Q01	250.1	C3H003Q01	mg l^-1
Chloride	9	11.9	C3H003Q01	74.7	C3H003Q01	141.2	C3H003Q01	147.9	C3H003Q01	mg l^-1
Sodium	9	15.4	C3H003Q01	80.2	C3H003Q01	140	C3H003Q01	162.7	C3H003Q01	mg l^-1
Magnesium	9	8.3	C3H003Q01	31.8	C3H003Q01	59.1	C3H003Q01	65.1	C3H003Q01	mg l^-1
TDS	9	193	C3H003Q01	564	C3H003Q01	831	C3H003Q01	900	C3H003Q01	mg l^-1
Conductivity	9	24.6	C3H003Q01	81.1	C3H003Q01	123.5	C3H003Q01	124.2	C3H003Q01	mS m^-1

(11) Catchment C33A: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C3H010Q01 eye Tamasikwa on Thabasikwa Eye none

C3H007Q01 1366 at Espagsdrif on Hartsrivier 2

Station	total n samples	description	map code
C3H010Q01	eye	Tamasikwa on Thabasikwa Eye	none
C3H007Q01	1366	at Espagsdrif on Hartsrivier	2

C33A - Stations used: 1, Samples selected: 85 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 85 7.59 C3H007Q01 8.27 C3H007Q01 8.51 C3H007Q01 8.76 C3H007Q01 -log [H⁺]

Fluoride 85 0.24 C3H007Q01 0.55 C3H007Q01 0.65 C3H007Q01 0.73 C3H007Q01 mg l^-1

NO3(N) 85 0.02 C3H007Q01 2.827 C3H007Q01 4.62 C3H007Q01 6.512 C3H007Q01 mg l^-1

Sulphate 85 80.8 C3H007Q01 228.1 C3H007Q01 326.7 C3H007Q01 403 C3H007Q01 mg l^-1

Chloride 85 47.9 C3H007Q01 112.7 C3H007Q01 162.4 C3H007Q01 234.2 C3H007Q01 mg l^-1

Sodium 85 29.7 C3H007Q01 103.2 C3H007Q01 141.6 C3H007Q01 187.9 C3H007Q01 mg l^-1

Magnesium 85 30.3 C3H007Q01 52.3 C3H007Q01 72.7 C3H007Q01 85.2 C3H007Q01 mg l^-1

TDS 85 470 C3H007Q01 840 C3H007Q01 1086 C3H007Q01 1251 C3H007Q01 mg l^-1

Conductivity 85 63.3 C3H007Q01 116.1 C3H007Q01 161 C3H007Q01 183 C3H007Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C33A n=85 Class 2: I(SO4 Cl Na) II(Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	85	7.59	C3H007Q01	8.27	C3H007Q01	8.51	C3H007Q01	8.76	C3H007Q01	-log [H⁺]
Fluoride	85	0.24	C3H007Q01	0.55	C3H007Q01	0.65	C3H007Q01	0.73	C3H007Q01	mg l^-1
NO3(N)	85	0.02	C3H007Q01	2.827	C3H007Q01	4.62	C3H007Q01	6.512	C3H007Q01	mg l^-1
Sulphate	85	80.8	C3H007Q01	228.1	C3H007Q01	326.7	C3H007Q01	403	C3H007Q01	mg l^-1
Chloride	85	47.9	C3H007Q01	112.7	C3H007Q01	162.4	C3H007Q01	234.2	C3H007Q01	mg l^-1
Sodium	85	29.7	C3H007Q01	103.2	C3H007Q01	141.6	C3H007Q01	187.9	C3H007Q01	mg l^-1
Magnesium	85	30.3	C3H007Q01	52.3	C3H007Q01	72.7	C3H007Q01	85.2	C3H007Q01	mg l^-1
TDS	85	470	C3H007Q01	840	C3H007Q01	1086	C3H007Q01	1251	C3H007Q01	mg l^-1
Conductivity	85	63.3	C3H007Q01	116.1	C3H007Q01	161	C3H007Q01	183	C3H007Q01	mS m^-1

(12) Catchment C33B: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C3H012Q01 eye Vlakfontein Eye at Metsematshwe Reserve none

C3H007Q01 1366 at Espagsdrif on Hartsrivier 3

Station	total n samples	description	map code
C3H012Q01	eye	Vlakfontein Eye at Metsematshwe Reserve	none
C3H007Q01	1366	at Espagsdrif on Hartsrivier	3

C33B - Stations used: 1, Samples selected: 85 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 85 7.59 C3H007Q01 8.27 C3H007Q01 8.51 C3H007Q01 8.76 C3H007Q01 -log [H⁺]

Fluoride 85 0.24 C3H007Q01 0.55 C3H007Q01 0.65 C3H007Q01 0.73 C3H007Q01 mg l^-1

NO3(N) 85 0.02 C3H007Q01 2.827 C3H007Q01 4.62 C3H007Q01 6.512 C3H007Q01 mg l^-1

Sulphate 85 80.8 C3H007Q01 228.1 C3H007Q01 326.7 C3H007Q01 403 C3H007Q01 mg l^-1

Chloride 85 47.9 C3H007Q01 112.7 C3H007Q01 162.4 C3H007Q01 234.2 C3H007Q01 mg l^-1

Sodium 85 29.7 C3H007Q01 103.2 C3H007Q01 141.6 C3H007Q01 187.9 C3H007Q01 mg l^-1

Magnesium 85 30.3 C3H007Q01 52.3 C3H007Q01 72.7 C3H007Q01 85.2 C3H007Q01 mg l^-1

TDS 85 470 C3H007Q01 840 C3H007Q01 1086 C3H007Q01 1251 C3H007Q01 mg l^-1

Conductivity 85 63.3 C3H007Q01 116.1 C3H007Q01 161 C3H007Q01 183 C3H007Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C33B n=85 Class 2: I(SO4 Cl Na) II(Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	85	7.59	C3H007Q01	8.27	C3H007Q01	8.51	C3H007Q01	8.76	C3H007Q01	-log [H⁺]
Fluoride	85	0.24	C3H007Q01	0.55	C3H007Q01	0.65	C3H007Q01	0.73	C3H007Q01	mg l^-1
NO3(N)	85	0.02	C3H007Q01	2.827	C3H007Q01	4.62	C3H007Q01	6.512	C3H007Q01	mg l^-1
Sulphate	85	80.8	C3H007Q01	228.1	C3H007Q01	326.7	C3H007Q01	403	C3H007Q01	mg l^-1
Chloride	85	47.9	C3H007Q01	112.7	C3H007Q01	162.4	C3H007Q01	234.2	C3H007Q01	mg l^-1
Sodium	85	29.7	C3H007Q01	103.2	C3H007Q01	141.6	C3H007Q01	187.9	C3H007Q01	mg l^-1
Magnesium	85	30.3	C3H007Q01	52.3	C3H007Q01	72.7	C3H007Q01	85.2	C3H007Q01	mg l^-1
TDS	85	470	C3H007Q01	840	C3H007Q01	1086	C3H007Q01	1251	C3H007Q01	mg l^-1
Conductivity	85	63.3	C3H007Q01	116.1	C3H007Q01	161	C3H007Q01	183	C3H007Q01	mS m^-1

(13) Catchment C33C: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C3H013Q01 1281 at Spitskop Mount Rupert on Hartsrivier 4

C3H016Q01 228 at Delportshoop Lloyds Weir on Hartsrivi 5

Station	total n samples	description	map code
C3H013Q01	1281	at Spitskop Mount Rupert on Hartsrivier	4
C3H016Q01	228	at Delportshoop Lloyds Weir on Hartsrivi	5

C33C - Stations used: 2, Samples selected: 111 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 111 7.6 C3H016Q01 8.29 C3H016Q01 8.61 C3H016Q01 8.8 C3H016Q01 -log [H⁺]

Fluoride 111 0.25 C3H016Q01 0.56 C3H016Q01 0.65 C3H016Q01 0.71 C3H016Q01 mg l^-1

NO3(N) 111 0.02 C3H016Q01 0.147 C3H016Q01 0.721 C3H016Q01 3.731 C3H016Q01 mg l^-1

Sulphate 111 56.4 C3H016Q01 306.3 C3H016Q01 405.7 C3H016Q01 588.6 C3H016Q01 mg l^-1

Chloride 111 26.4 C3H016Q01 190.4 C3H016Q01 247.5 C3H016Q01 308.6 C3H016Q01 mg l^-1

Sodium 111 28.6 C3H016Q01 157.9 C3H016Q01 195.2 C3H016Q01 264.4 C3H016Q01 mg l^-1

Magnesium 111 14.5 C3H016Q01 69 C3H016Q01 88.1 C3H016Q01 124.1 C3H016Q01 mg l^-1

TDS 111 296 C3H016Q01 1019 C3H016Q01 1227 C3H016Q01 1591 C3H016Q01 mg l^-1

Conductivity 111 43.4 C3H016Q01 157 C3H016Q01 188 C3H016Q01 232 C3H016Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C33C n=111 Class 2: I(Na) II(SO4 Cl Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	111	7.6	C3H016Q01	8.29	C3H016Q01	8.61	C3H016Q01	8.8	C3H016Q01	-log [H⁺]
Fluoride	111	0.25	C3H016Q01	0.56	C3H016Q01	0.65	C3H016Q01	0.71	C3H016Q01	mg l^-1
NO3(N)	111	0.02	C3H016Q01	0.147	C3H016Q01	0.721	C3H016Q01	3.731	C3H016Q01	mg l^-1
Sulphate	111	56.4	C3H016Q01	306.3	C3H016Q01	405.7	C3H016Q01	588.6	C3H016Q01	mg l^-1
Chloride	111	26.4	C3H016Q01	190.4	C3H016Q01	247.5	C3H016Q01	308.6	C3H016Q01	mg l^-1
Sodium	111	28.6	C3H016Q01	157.9	C3H016Q01	195.2	C3H016Q01	264.4	C3H016Q01	mg l^-1
Magnesium	111	14.5	C3H016Q01	69	C3H016Q01	88.1	C3H016Q01	124.1	C3H016Q01	mg l^-1
TDS	111	296	C3H016Q01	1019	C3H016Q01	1227	C3H016Q01	1591	C3H016Q01	mg l^-1
Conductivity	111	43.4	C3H016Q01	157	C3H016Q01	188	C3H016Q01	232	C3H016Q01	mS m^-1

(14) Catchment C51L: Total number of "H...Q" (flow gauging, quality) stations = 3.

Station total n
samples description map
code

C5H016Q01 692 at Estate Biesiesbult Aucampshoop on Rie 6

C5H035Q01 516 @ Twee Rivier D-S Twee Rivier on Modder 7

C5H014Q01 477 at Klipdrift Ritchie on Rietrivier 8

Station	total n samples	description	map code
C5H016Q01	692	at Estate Biesiesbult Aucampshoop on Rie	6
C5H035Q01	516	@ Twee Rivier D-S Twee Rivier on Modder	7
C5H014Q01	477	at Klipdrift Ritchie on Rietrivier	8

C51L - Stations used: 3, Samples selected: 243 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 243 7.1 C5H035Q01 8.09 C5H035Q01 8.26 C5H035Q01 8.66 C5H014Q01 -log [H⁺]

Fluoride 243 0.1 C5H035Q01 0.21 C5H014Q01 0.28 C5H035Q01 0.36 C5H016Q01 mg l^-1

NO3(N) 243 0.02 C5H014Q01 0.27 C5H035Q01 0.915 C5H035Q01 4.417 C5H035Q01 mg l^-1

Sulphate 243 3 C5H014Q01 32.2 C5H035Q01 113.4 C5H035Q01 243.1 C5H016Q01 mg l^-1

Chloride 243 2.5 C5H014Q01 28.9 C5H014Q01 134.5 C5H035Q01 362.1 C5H016Q01 mg l^-1

Sodium 243 4.2 C5H014Q01 25.1 C5H014Q01 81.9 C5H035Q01 221.2 C5H016Q01 mg l^-1

Magnesium 243 5.1 C5H035Q01 12.4 C5H035Q01 34.5 C5H035Q01 78 C5H016Q01 mg l^-1

TDS 243 130 C5H014Q01 253 C5H014Q01 601 C5H035Q01 1202 C5H016Q01 mg l^-1

Conductivity 243 17 C5H014Q01 36 C5H014Q01 92.2 C5H035Q01 198 C5H016Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C51L n=243 Class 1: I(Cl Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	243	7.1	C5H035Q01	8.09	C5H035Q01	8.26	C5H035Q01	8.66	C5H014Q01	-log [H⁺]
Fluoride	243	0.1	C5H035Q01	0.21	C5H014Q01	0.28	C5H035Q01	0.36	C5H016Q01	mg l^-1
NO3(N)	243	0.02	C5H014Q01	0.27	C5H035Q01	0.915	C5H035Q01	4.417	C5H035Q01	mg l^-1
Sulphate	243	3	C5H014Q01	32.2	C5H035Q01	113.4	C5H035Q01	243.1	C5H016Q01	mg l^-1
Chloride	243	2.5	C5H014Q01	28.9	C5H014Q01	134.5	C5H035Q01	362.1	C5H016Q01	mg l^-1
Sodium	243	4.2	C5H014Q01	25.1	C5H014Q01	81.9	C5H035Q01	221.2	C5H016Q01	mg l^-1
Magnesium	243	5.1	C5H035Q01	12.4	C5H035Q01	34.5	C5H035Q01	78	C5H016Q01	mg l^-1
TDS	243	130	C5H014Q01	253	C5H014Q01	601	C5H035Q01	1202	C5H016Q01	mg l^-1
Conductivity	243	17	C5H014Q01	36	C5H014Q01	92.2	C5H035Q01	198	C5H016Q01	mS m^-1

(15) Catchment C51M: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C5H016Q01 692 at Estate Biesiesbult Aucampshoop on Rie 9

C5H048Q01 733 at Zoutpansdrift on Rietrivier 10

Station	total n samples	description	map code
C5H016Q01	692	at Estate Biesiesbult Aucampshoop on Rie	9
C5H048Q01	733	at Zoutpansdrift on Rietrivier	10

C51M - Stations used: 2, Samples selected: 248 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 248 7.41 C5H048Q01 8.24 C5H048Q01 8.44 C5H048Q01 8.68 C5H048Q01 -log [H⁺]

Fluoride 248 0.1 C5H048Q01 0.31 C5H048Q01 0.36 C5H048Q01 0.61 C5H048Q01 mg l^-1

NO3(N) 248 0.02 C5H048Q01 0.055 C5H048Q01 0.237 C5H016Q01 0.967 C5H048Q01 mg l^-1

Sulphate 248 9.6 C5H016Q01 192.7 C5H048Q01 366.5 C5H048Q01 528.5 C5H048Q01 mg l^-1

Chloride 248 5 C5H016Q01 243.8 C5H048Q01 474.2 C5H048Q01 647.6 C5H048Q01 mg l^-1

Sodium 248 4.9 C5H016Q01 155.7 C5H048Q01 285.7 C5H048Q01 418.9 C5H048Q01 mg l^-1

Magnesium 248 6.1 C5H016Q01 55.3 C5H048Q01 97.4 C5H048Q01 133.9 C5H048Q01 mg l^-1

TDS 248 142 C5H016Q01 919 C5H048Q01 1556 C5H048Q01 2071 C5H048Q01 mg l^-1

Conductivity 248 18 C5H016Q01 151 C5H048Q01 259.2 C5H048Q01 344 C5H048Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C51M n=248 Class 2: I(SO4) II(Cl Na Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	248	7.41	C5H048Q01	8.24	C5H048Q01	8.44	C5H048Q01	8.68	C5H048Q01	-log [H⁺]
Fluoride	248	0.1	C5H048Q01	0.31	C5H048Q01	0.36	C5H048Q01	0.61	C5H048Q01	mg l^-1
NO3(N)	248	0.02	C5H048Q01	0.055	C5H048Q01	0.237	C5H016Q01	0.967	C5H048Q01	mg l^-1
Sulphate	248	9.6	C5H016Q01	192.7	C5H048Q01	366.5	C5H048Q01	528.5	C5H048Q01	mg l^-1
Chloride	248	5	C5H016Q01	243.8	C5H048Q01	474.2	C5H048Q01	647.6	C5H048Q01	mg l^-1
Sodium	248	4.9	C5H016Q01	155.7	C5H048Q01	285.7	C5H048Q01	418.9	C5H048Q01	mg l^-1
Magnesium	248	6.1	C5H016Q01	55.3	C5H048Q01	97.4	C5H048Q01	133.9	C5H048Q01	mg l^-1
TDS	248	142	C5H016Q01	919	C5H048Q01	1556	C5H048Q01	2071	C5H048Q01	mg l^-1
Conductivity	248	18	C5H016Q01	151	C5H048Q01	259.2	C5H048Q01	344	C5H048Q01	mS m^-1

(16) Catchment C52H: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C5H039Q01 dam Krugersdrift Dam on Modder River: Down S none

Station	total n samples	description	map code
C5H039Q01	dam	Krugersdrift Dam on Modder River: Down S	none

C52H - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(18) Catchment C52L: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C5H035Q01 516 @ Twee Rivier D-S Twee Rivier on Modder 11

C5H018Q01 563 Modder River at Tweerivier 12

Station	total n samples	description	map code
C5H035Q01	516	@ Twee Rivier D-S Twee Rivier on Modder	11
C5H018Q01	563	Modder River at Tweerivier	12

C52L - Stations used: 2, Samples selected: 135 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 135 7.1 C5H035Q01 8.07 C5H035Q01 8.25 C5H035Q01 8.35 C5H035Q01 -log [H⁺]

Fluoride 135 0.1 C5H035Q01 0.22 C5H035Q01 0.29 C5H035Q01 0.33 C5H035Q01 mg l^-1

NO3(N) 135 0.02 C5H018Q01 0.276 C5H035Q01 1.345 C5H035Q01 4.417 C5H035Q01 mg l^-1

Sulphate 135 8.1 C5H035Q01 38.6 C5H035Q01 118 C5H035Q01 172.3 C5H035Q01 mg l^-1

Chloride 135 2.5 C5H035Q01 46.7 C5H035Q01 165.8 C5H035Q01 238.5 C5H035Q01 mg l^-1

Sodium 135 6.3 C5H035Q01 32.2 C5H035Q01 87.8 C5H035Q01 138.1 C5H035Q01 mg l^-1

Magnesium 135 5.1 C5H035Q01 16.7 C5H035Q01 38.9 C5H035Q01 51.8 C5H035Q01 mg l^-1

TDS 135 147 C5H035Q01 315 C5H035Q01 675 C5H035Q01 885 C5H035Q01 mg l^-1

Conductivity 135 19.2 C5H035Q01 47.2 C5H035Q01 102.4 C5H035Q01 141 C5H035Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C52L n=135 Class 1: I(Cl Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	135	7.1	C5H035Q01	8.07	C5H035Q01	8.25	C5H035Q01	8.35	C5H035Q01	-log [H⁺]
Fluoride	135	0.1	C5H035Q01	0.22	C5H035Q01	0.29	C5H035Q01	0.33	C5H035Q01	mg l^-1
NO3(N)	135	0.02	C5H018Q01	0.276	C5H035Q01	1.345	C5H035Q01	4.417	C5H035Q01	mg l^-1
Sulphate	135	8.1	C5H035Q01	38.6	C5H035Q01	118	C5H035Q01	172.3	C5H035Q01	mg l^-1
Chloride	135	2.5	C5H035Q01	46.7	C5H035Q01	165.8	C5H035Q01	238.5	C5H035Q01	mg l^-1
Sodium	135	6.3	C5H035Q01	32.2	C5H035Q01	87.8	C5H035Q01	138.1	C5H035Q01	mg l^-1
Magnesium	135	5.1	C5H035Q01	16.7	C5H035Q01	38.9	C5H035Q01	51.8	C5H035Q01	mg l^-1
TDS	135	147	C5H035Q01	315	C5H035Q01	675	C5H035Q01	885	C5H035Q01	mg l^-1
Conductivity	135	19.2	C5H035Q01	47.2	C5H035Q01	102.4	C5H035Q01	141	C5H035Q01	mS m^-1

(19) Catchment C91A: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C9H021Q01 dam Bloemhof Dam on Vaal River: Down Stream none

Station	total n samples	description	map code
C9H021Q01	dam	Bloemhof Dam on Vaal River: Down Stream	none

C91A - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(20) Catchment C91B: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C9H018Q01 163 Vaalharts Barrage on Vaal River: Right C 13

Station	total n samples	description	map code
C9H018Q01	163	Vaalharts Barrage on Vaal River: Right C	13

C91B - Stations used: 1, Samples selected: 87 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 87 7.37 C9H018Q01 8.09 C9H018Q01 8.28 C9H018Q01 8.56 C9H018Q01 -log [H⁺]

Fluoride 87 0.05 C9H018Q01 0.36 C9H018Q01 0.43 C9H018Q01 0.47 C9H018Q01 mg l^-1

NO3(N) 87 0.02 C9H018Q01 0.04 C9H018Q01 0.109 C9H018Q01 0.316 C9H018Q01 mg l^-1

Sulphate 87 55.9 C9H018Q01 153.8 C9H018Q01 205.4 C9H018Q01 225.6 C9H018Q01 mg l^-1

Chloride 87 24.3 C9H018Q01 56.1 C9H018Q01 88.3 C9H018Q01 107 C9H018Q01 mg l^-1

Sodium 87 23 C9H018Q01 59.3 C9H018Q01 81.7 C9H018Q01 91 C9H018Q01 mg l^-1

Magnesium 87 13.7 C9H018Q01 25.8 C9H018Q01 32.3 C9H018Q01 36.7 C9H018Q01 mg l^-1

TDS 87 283 C9H018Q01 487 C9H018Q01 643 C9H018Q01 695 C9H018Q01 mg l^-1

Conductivity 87 40.2 C9H018Q01 74.4 C9H018Q01 92 C9H018Q01 99.8 C9H018Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C91B n=87 Class 1: I(SO4 Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	87	7.37	C9H018Q01	8.09	C9H018Q01	8.28	C9H018Q01	8.56	C9H018Q01	-log [H⁺]
Fluoride	87	0.05	C9H018Q01	0.36	C9H018Q01	0.43	C9H018Q01	0.47	C9H018Q01	mg l^-1
NO3(N)	87	0.02	C9H018Q01	0.04	C9H018Q01	0.109	C9H018Q01	0.316	C9H018Q01	mg l^-1
Sulphate	87	55.9	C9H018Q01	153.8	C9H018Q01	205.4	C9H018Q01	225.6	C9H018Q01	mg l^-1
Chloride	87	24.3	C9H018Q01	56.1	C9H018Q01	88.3	C9H018Q01	107	C9H018Q01	mg l^-1
Sodium	87	23	C9H018Q01	59.3	C9H018Q01	81.7	C9H018Q01	91	C9H018Q01	mg l^-1
Magnesium	87	13.7	C9H018Q01	25.8	C9H018Q01	32.3	C9H018Q01	36.7	C9H018Q01	mg l^-1
TDS	87	283	C9H018Q01	487	C9H018Q01	643	C9H018Q01	695	C9H018Q01	mg l^-1
Conductivity	87	40.2	C9H018Q01	74.4	C9H018Q01	92	C9H018Q01	99.8	C9H018Q01	mS m^-1

(22) Catchment C91D: Total number of "H...Q" (flow gauging, quality) stations = 3.

Station total n
samples description map
code

C9H008Q01 674 Vaalharts Barrage on Vaal River: Down St 14

C9H018Q01 163 Vaalharts Barrage on Vaal River: Right C 15

C9H003Q01 9 Vaal River at Droogfontein-Riverton 16

Station	total n samples	description	map code
C9H008Q01	674	Vaalharts Barrage on Vaal River: Down St	14
C9H018Q01	163	Vaalharts Barrage on Vaal River: Right C	15
C9H003Q01	9	Vaal River at Droogfontein-Riverton	16

C91D - Stations used: 3, Samples selected: 189 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 189 7.37 C9H018Q01 8.1 C9H008Q01 8.29 C9H008Q01 8.6 C9H008Q01 -log [H⁺]

Fluoride 189 0.05 C9H018Q01 0.36 C9H008Q01 0.43 C9H018Q01 0.5 C9H008Q01 mg l^-1

NO3(N) 189 0.02 C9H018Q01 0.04 C9H018Q01 0.138 C9H008Q01 0.593 C9H008Q01 mg l^-1

Sulphate 189 55.9 C9H018Q01 139.7 C9H008Q01 203 C9H018Q01 265.4 C9H008Q01 mg l^-1

Chloride 189 22.2 C9H008Q01 56.1 C9H018Q01 83.8 C9H008Q01 107 C9H018Q01 mg l^-1

Sodium 189 23 C9H018Q01 57.6 C9H008Q01 80.6 C9H018Q01 100.8 C9H008Q01 mg l^-1

Magnesium 189 13.7 C9H008Q01 24.4 C9H018Q01 32.6 C9H018Q01 37.8 C9H008Q01 mg l^-1

TDS 189 276 C9H008Q01 472 C9H008Q01 638 C9H018Q01 738 C9H008Q01 mg l^-1

Conductivity 189 37.9 C9H008Q01 72 C9H008Q01 91.9 C9H018Q01 102.2 C9H008Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C91D n=189 Class 1: I(SO4 Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	189	7.37	C9H018Q01	8.1	C9H008Q01	8.29	C9H008Q01	8.6	C9H008Q01	-log [H⁺]
Fluoride	189	0.05	C9H018Q01	0.36	C9H008Q01	0.43	C9H018Q01	0.5	C9H008Q01	mg l^-1
NO3(N)	189	0.02	C9H018Q01	0.04	C9H018Q01	0.138	C9H008Q01	0.593	C9H008Q01	mg l^-1
Sulphate	189	55.9	C9H018Q01	139.7	C9H008Q01	203	C9H018Q01	265.4	C9H008Q01	mg l^-1
Chloride	189	22.2	C9H008Q01	56.1	C9H018Q01	83.8	C9H008Q01	107	C9H018Q01	mg l^-1
Sodium	189	23	C9H018Q01	57.6	C9H008Q01	80.6	C9H018Q01	100.8	C9H008Q01	mg l^-1
Magnesium	189	13.7	C9H008Q01	24.4	C9H018Q01	32.6	C9H018Q01	37.8	C9H008Q01	mg l^-1
TDS	189	276	C9H008Q01	472	C9H008Q01	638	C9H018Q01	738	C9H008Q01	mg l^-1
Conductivity	189	37.9	C9H008Q01	72	C9H008Q01	91.9	C9H018Q01	102.2	C9H008Q01	mS m^-1

(23) Catchment C91E: Total number of "H...Q" (flow gauging, quality) stations = 3.

Station total n
samples description map
code

C9H010Q01 1941 Vaal River at Mozib-Gamagara 17

C9H003Q01 9 Vaal River at Droogfontein-Riverton 18

C9H009Q01 1317 Vaal River at De Hoop 19

Station	total n samples	description	map code
C9H010Q01	1941	Vaal River at Mozib-Gamagara	17
C9H003Q01	9	Vaal River at Droogfontein-Riverton	18
C9H009Q01	1317	Vaal River at De Hoop	19

C91E - Stations used: 3, Samples selected: 85 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 85 7.21 C9H009Q01 8.2 C9H009Q01 8.38 C9H009Q01 8.47 C9H009Q01 -log [H⁺]

Fluoride 85 0.24 C9H009Q01 0.35 C9H009Q01 0.48 C9H009Q01 0.62 C9H009Q01 mg l^-1

NO3(N) 85 0.02 C9H009Q01 0.042 C9H009Q01 0.095 C9H009Q01 0.558 C9H009Q01 mg l^-1

Sulphate 85 60.4 C9H009Q01 130.8 C9H009Q01 239.7 C9H009Q01 344.9 C9H009Q01 mg l^-1

Chloride 85 21.8 C9H009Q01 67 C9H009Q01 136.1 C9H009Q01 177 C9H009Q01 mg l^-1

Sodium 85 23.5 C9H009Q01 59.6 C9H009Q01 120 C9H009Q01 154.6 C9H009Q01 mg l^-1

Magnesium 85 12.6 C9H009Q01 28.7 C9H009Q01 52.6 C9H009Q01 62.1 C9H009Q01 mg l^-1

TDS 85 270 C9H009Q01 509 C9H009Q01 773 C9H009Q01 950 C9H009Q01 mg l^-1

Conductivity 85 39.1 C9H009Q01 75.2 C9H009Q01 117.3 C9H009Q01 144 C9H009Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C91E n=85 Class 1: I(SO4 Cl Na Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	85	7.21	C9H009Q01	8.2	C9H009Q01	8.38	C9H009Q01	8.47	C9H009Q01	-log [H⁺]
Fluoride	85	0.24	C9H009Q01	0.35	C9H009Q01	0.48	C9H009Q01	0.62	C9H009Q01	mg l^-1
NO3(N)	85	0.02	C9H009Q01	0.042	C9H009Q01	0.095	C9H009Q01	0.558	C9H009Q01	mg l^-1
Sulphate	85	60.4	C9H009Q01	130.8	C9H009Q01	239.7	C9H009Q01	344.9	C9H009Q01	mg l^-1
Chloride	85	21.8	C9H009Q01	67	C9H009Q01	136.1	C9H009Q01	177	C9H009Q01	mg l^-1
Sodium	85	23.5	C9H009Q01	59.6	C9H009Q01	120	C9H009Q01	154.6	C9H009Q01	mg l^-1
Magnesium	85	12.6	C9H009Q01	28.7	C9H009Q01	52.6	C9H009Q01	62.1	C9H009Q01	mg l^-1
TDS	85	270	C9H009Q01	509	C9H009Q01	773	C9H009Q01	950	C9H009Q01	mg l^-1
Conductivity	85	39.1	C9H009Q01	75.2	C9H009Q01	117.3	C9H009Q01	144	C9H009Q01	mS m^-1

(24) Catchment C92A: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

C9H015Q01 21 Danielskuil 2 at Danielskuil 20

C9H010Q01 1941 Vaal River at Mozib-Gamagara 21

Station	total n samples	description	map code
C9H015Q01	21	Danielskuil 2 at Danielskuil	20
C9H010Q01	1941	Vaal River at Mozib-Gamagara	21

C92A - Stations used: 2, Samples selected: 7 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 7 7.97 C9H015Q01 8.28 C9H015Q01 8.48 C9H015Q01 8.49 C9H015Q01 -log [H⁺]

Fluoride 7 0.1 C9H015Q01 0.12 C9H015Q01 0.26 C9H010Q01 0.44 C9H010Q01 mg l^-1

NO3(N) 7 0.02 C9H010Q01 1.933 C9H015Q01 2.83 C9H015Q01 3.176 C9H015Q01 mg l^-1

Sulphate 7 27.7 C9H015Q01 33.3 C9H015Q01 96 C9H010Q01 218.9 C9H010Q01 mg l^-1

Chloride 7 14.6 C9H015Q01 15.7 C9H015Q01 49.5 C9H010Q01 117.6 C9H010Q01 mg l^-1

Sodium 7 6.7 C9H015Q01 7.9 C9H015Q01 39.2 C9H010Q01 104.6 C9H010Q01 mg l^-1

Magnesium 7 14.9 C9H015Q01 15.4 C9H015Q01 27.5 C9H010Q01 48.2 C9H010Q01 mg l^-1

TDS 7 288 C9H015Q01 294 C9H015Q01 459 C9H010Q01 714 C9H010Q01 mg l^-1

Conductivity 7 39.2 C9H015Q01 40.2 C9H015Q01 67.6 C9H010Q01 104.5 C9H010Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C92A n=7 Class 1: I(TDS)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	7	7.97	C9H015Q01	8.28	C9H015Q01	8.48	C9H015Q01	8.49	C9H015Q01	-log [H⁺]
Fluoride	7	0.1	C9H015Q01	0.12	C9H015Q01	0.26	C9H010Q01	0.44	C9H010Q01	mg l^-1
NO3(N)	7	0.02	C9H010Q01	1.933	C9H015Q01	2.83	C9H015Q01	3.176	C9H015Q01	mg l^-1
Sulphate	7	27.7	C9H015Q01	33.3	C9H015Q01	96	C9H010Q01	218.9	C9H010Q01	mg l^-1
Chloride	7	14.6	C9H015Q01	15.7	C9H015Q01	49.5	C9H010Q01	117.6	C9H010Q01	mg l^-1
Sodium	7	6.7	C9H015Q01	7.9	C9H015Q01	39.2	C9H010Q01	104.6	C9H010Q01	mg l^-1
Magnesium	7	14.9	C9H015Q01	15.4	C9H015Q01	27.5	C9H010Q01	48.2	C9H010Q01	mg l^-1
TDS	7	288	C9H015Q01	294	C9H015Q01	459	C9H010Q01	714	C9H010Q01	mg l^-1
Conductivity	7	39.2	C9H015Q01	40.2	C9H015Q01	67.6	C9H010Q01	104.5	C9H010Q01	mS m^-1

(25) Catchment C92B: Total number of "H...Q" (flow gauging, quality) stations = 7.

Station total n
samples description map
code

C9H023Q01 42 Vaal River at Schmidtsdrift Flood Secti 22

C9H024Q01 169 at Schmidtsdrift Weir on Vaal River 23

C9H019Q01 597 Douglas Barrage on Vaal River: Artherton 24

C9H017Q01 600 Douglas Barrage on Vaal River: Bucklands 25

C9H016Q01 canal Vaal River: Left Bank Canal at St Claire none

C9H007Q01 130 Vaal River at St Claire-Douglas 26

C9H025Q01 canal Orange-Vaal Canal at St Clair-Douglas BA none

Station	total n samples	description	map code
C9H023Q01	42	Vaal River at Schmidtsdrift Flood Secti	22
C9H024Q01	169	at Schmidtsdrift Weir on Vaal River	23
C9H019Q01	597	Douglas Barrage on Vaal River: Artherton	24
C9H017Q01	600	Douglas Barrage on Vaal River: Bucklands	25
C9H016Q01	canal	Vaal River: Left Bank Canal at St Claire	none
C9H007Q01	130	Vaal River at St Claire-Douglas	26
C9H025Q01	canal	Orange-Vaal Canal at St Clair-Douglas BA	none

C92B - Stations used: 5, Samples selected: 532 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 532 7.33 C9H017Q01 8.22 C9H019Q01 8.46 C9H017Q01 8.87 C9H019Q01 -log [H⁺]

Fluoride 532 0.05 C9H019Q01 0.33 C9H019Q01 0.45 C9H024Q01 0.61 C9H024Q01 mg l^-1

NO3(N) 532 0.02 C9H017Q01 0.119 C9H017Q01 0.282 C9H017Q01 0.635 C9H019Q01 mg l^-1

Sulphate 532 10.8 C9H017Q01 151.4 C9H024Q01 236 C9H017Q01 368.9 C9H017Q01 mg l^-1

Chloride 532 5.9 C9H017Q01 105.1 C9H019Q01 167.5 C9H024Q01 263.9 C9H019Q01 mg l^-1

Sodium 532 8.1 C9H017Q01 83.9 C9H019Q01 132.7 C9H019Q01 179.2 C9H017Q01 mg l^-1

Magnesium 532 7.2 C9H017Q01 35.6 C9H017Q01 53.2 C9H017Q01 73.5 C9H017Q01 mg l^-1

TDS 532 163 C9H017Q01 596 C9H019Q01 814 C9H017Q01 1122 C9H017Q01 mg l^-1

Conductivity 532 21.8 C9H017Q01 89.5 C9H024Q01 123.7 C9H019Q01 167 C9H017Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C92B n=532 Class 1: I(SO4 Cl Na Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	532	7.33	C9H017Q01	8.22	C9H019Q01	8.46	C9H017Q01	8.87	C9H019Q01	-log [H⁺]
Fluoride	532	0.05	C9H019Q01	0.33	C9H019Q01	0.45	C9H024Q01	0.61	C9H024Q01	mg l^-1
NO3(N)	532	0.02	C9H017Q01	0.119	C9H017Q01	0.282	C9H017Q01	0.635	C9H019Q01	mg l^-1
Sulphate	532	10.8	C9H017Q01	151.4	C9H024Q01	236	C9H017Q01	368.9	C9H017Q01	mg l^-1
Chloride	532	5.9	C9H017Q01	105.1	C9H019Q01	167.5	C9H024Q01	263.9	C9H019Q01	mg l^-1
Sodium	532	8.1	C9H017Q01	83.9	C9H019Q01	132.7	C9H019Q01	179.2	C9H017Q01	mg l^-1
Magnesium	532	7.2	C9H017Q01	35.6	C9H017Q01	53.2	C9H017Q01	73.5	C9H017Q01	mg l^-1
TDS	532	163	C9H017Q01	596	C9H019Q01	814	C9H017Q01	1122	C9H017Q01	mg l^-1
Conductivity	532	21.8	C9H017Q01	89.5	C9H024Q01	123.7	C9H019Q01	167	C9H017Q01	mS m^-1

(26) Catchment C92C: Total number of "H...Q" (flow gauging, quality) stations = 6.

Station total n
samples description map
code

C9H019Q01 597 Douglas Barrage on Vaal River: Artherton 27

C9H017Q01 600 Douglas Barrage on Vaal River: Bucklands 28

C9H016Q01 canal Vaal River: Left Bank Canal at St Claire none

C9H007Q01 130 Vaal River at St Claire-Douglas 29

C9H025Q01 canal Orange-Vaal Canal at St Clair-Douglas BA none

C9H011Q01 72 Vaal River at Douglas Bridge 30

Station	total n samples	description	map code
C9H019Q01	597	Douglas Barrage on Vaal River: Artherton	27
C9H017Q01	600	Douglas Barrage on Vaal River: Bucklands	28
C9H016Q01	canal	Vaal River: Left Bank Canal at St Claire	none
C9H007Q01	130	Vaal River at St Claire-Douglas	29
C9H025Q01	canal	Orange-Vaal Canal at St Clair-Douglas BA	none
C9H011Q01	72	Vaal River at Douglas Bridge	30

C92C - Stations used: 4, Samples selected: 464 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 464 7.33 C9H017Q01 8.22 C9H017Q01 8.47 C9H017Q01 8.87 C9H019Q01 -log [H⁺]

Fluoride 464 0.05 C9H019Q01 0.32 C9H017Q01 0.43 C9H017Q01 0.55 C9H019Q01 mg l^-1

NO3(N) 464 0.02 C9H017Q01 0.147 C9H019Q01 0.291 C9H019Q01 0.635 C9H019Q01 mg l^-1

Sulphate 464 10.8 C9H017Q01 147.4 C9H019Q01 225.2 C9H017Q01 368.9 C9H017Q01 mg l^-1

Chloride 464 5.9 C9H017Q01 112.2 C9H017Q01 172.9 C9H017Q01 263.9 C9H019Q01 mg l^-1

Sodium 464 8.1 C9H017Q01 86.1 C9H017Q01 133 C9H017Q01 179.2 C9H017Q01 mg l^-1

Magnesium 464 7.2 C9H017Q01 35 C9H019Q01 50.9 C9H017Q01 73.5 C9H017Q01 mg l^-1

TDS 464 163 C9H017Q01 596 C9H019Q01 808 C9H019Q01 1122 C9H017Q01 mg l^-1

Conductivity 464 21.8 C9H017Q01 89.8 C9H019Q01 123.5 C9H019Q01 167 C9H017Q01 mS m^-1

Summary of classification (consituents in each range in brackets): C92C n=464 Class 1: I(SO4 Cl Na Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	464	7.33	C9H017Q01	8.22	C9H017Q01	8.47	C9H017Q01	8.87	C9H019Q01	-log [H⁺]
Fluoride	464	0.05	C9H019Q01	0.32	C9H017Q01	0.43	C9H017Q01	0.55	C9H019Q01	mg l^-1
NO3(N)	464	0.02	C9H017Q01	0.147	C9H019Q01	0.291	C9H019Q01	0.635	C9H019Q01	mg l^-1
Sulphate	464	10.8	C9H017Q01	147.4	C9H019Q01	225.2	C9H017Q01	368.9	C9H017Q01	mg l^-1
Chloride	464	5.9	C9H017Q01	112.2	C9H017Q01	172.9	C9H017Q01	263.9	C9H019Q01	mg l^-1
Sodium	464	8.1	C9H017Q01	86.1	C9H017Q01	133	C9H017Q01	179.2	C9H017Q01	mg l^-1
Magnesium	464	7.2	C9H017Q01	35	C9H019Q01	50.9	C9H017Q01	73.5	C9H017Q01	mg l^-1
TDS	464	163	C9H017Q01	596	C9H019Q01	808	C9H019Q01	1122	C9H017Q01	mg l^-1
Conductivity	464	21.8	C9H017Q01	89.8	C9H019Q01	123.5	C9H019Q01	167	C9H017Q01	mS m^-1

(27) Catchment D41A: Total number of "H...Q" (flow gauging, quality) stations = 12.

Station total n
samples description map
code

D4H016Q01 eye Welgedacht Eye at Welgedacht none

A3H020Q01 coord
error Drainage region error for Kareebosch Eye at Kareebosch:
Secondary=D4 but station=A3 !

A3H020Q01 coord
error Kareebosch Eye at Kareebosch none

D4H013Q01 90 Molopo River at Rietvallei 31

D4H017Q01 eye Olivendraai Eye at Olivendraai none

D4H036Q01 canal Molopo River: Canal at Ratshidi From Mod none

D4H012Q01 sewage Mmbatho Sewage Effluent none

D4H026Q01 70 Cookes Lake Molopo River at Mafikeng 32

D4H027Q01 sewage Mafikeng Sewage Treatment Works none

D4H037Q01 dam Lotlamoreng Dam on Molopo River: near DA none

D4H014Q01 eye Molopo Eye at Mallepoos Oog none

D4H004Q01 pipe Grootfontein Eye Pipeline at Valleifon none

D4H019Q01 eye Polfontein Eye at Matlabes Reserve none

Station	total n samples	description	map code
D4H016Q01	eye	Welgedacht Eye at Welgedacht	none
A3H020Q01	coord error	Drainage region error for Kareebosch Eye at Kareebosch: Secondary=D4 but station=A3	!
A3H020Q01	coord error	Kareebosch Eye at Kareebosch	none
D4H013Q01	90	Molopo River at Rietvallei	31
D4H017Q01	eye	Olivendraai Eye at Olivendraai	none
D4H036Q01	canal	Molopo River: Canal at Ratshidi From Mod	none
D4H012Q01	sewage	Mmbatho Sewage Effluent	none
D4H026Q01	70	Cookes Lake Molopo River at Mafikeng	32
D4H027Q01	sewage	Mafikeng Sewage Treatment Works	none
D4H037Q01	dam	Lotlamoreng Dam on Molopo River: near DA	none
D4H014Q01	eye	Molopo Eye at Mallepoos Oog	none
D4H004Q01	pipe	Grootfontein Eye Pipeline at Valleifon	none
D4H019Q01	eye	Polfontein Eye at Matlabes Reserve	none

D41A - Stations used: 2, Samples selected: 57 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 57 7.42 D4H026Q01 8.28 D4H013Q01 8.51 D4H026Q01 8.68 D4H026Q01 -log [H⁺]

Fluoride 57 0.1 D4H026Q01 0.16 D4H013Q01 0.22 D4H026Q01 0.25 D4H026Q01 mg l^-1

NO3(N) 57 0.02 D4H026Q01 0.148 D4H026Q01 0.708 D4H026Q01 5.698 D4H026Q01 mg l^-1

Sulphate 57 2 D4H013Q01 20.5 D4H026Q01 38.4 D4H026Q01 49.9 D4H026Q01 mg l^-1

Chloride 57 5 D4H013Q01 30.8 D4H026Q01 60.9 D4H026Q01 73.4 D4H026Q01 mg l^-1

Sodium 57 3.2 D4H013Q01 20 D4H026Q01 43.2 D4H026Q01 64.4 D4H026Q01 mg l^-1

Magnesium 57 21.9 D4H026Q01 41.8 D4H013Q01 52.4 D4H026Q01 60.5 D4H026Q01 mg l^-1

TDS 57 288 D4H026Q01 529 D4H013Q01 595 D4H026Q01 637 D4H026Q01 mg l^-1

Conductivity 57 39.1 D4H026Q01 64.1 D4H026Q01 75.4 D4H026Q01 81.8 D4H026Q01 mS m^-1

Summary of classification (consituents in each range in brackets): D41A n=57 Class 1: I(Mg TDS EC)

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	57	7.42	D4H026Q01	8.28	D4H013Q01	8.51	D4H026Q01	8.68	D4H026Q01	-log [H⁺]
Fluoride	57	0.1	D4H026Q01	0.16	D4H013Q01	0.22	D4H026Q01	0.25	D4H026Q01	mg l^-1
NO3(N)	57	0.02	D4H026Q01	0.148	D4H026Q01	0.708	D4H026Q01	5.698	D4H026Q01	mg l^-1
Sulphate	57	2	D4H013Q01	20.5	D4H026Q01	38.4	D4H026Q01	49.9	D4H026Q01	mg l^-1
Chloride	57	5	D4H013Q01	30.8	D4H026Q01	60.9	D4H026Q01	73.4	D4H026Q01	mg l^-1
Sodium	57	3.2	D4H013Q01	20	D4H026Q01	43.2	D4H026Q01	64.4	D4H026Q01	mg l^-1
Magnesium	57	21.9	D4H026Q01	41.8	D4H013Q01	52.4	D4H026Q01	60.5	D4H026Q01	mg l^-1
TDS	57	288	D4H026Q01	529	D4H013Q01	595	D4H026Q01	637	D4H026Q01	mg l^-1
Conductivity	57	39.1	D4H026Q01	64.1	D4H026Q01	75.4	D4H026Q01	81.8	D4H026Q01	mS m^-1

(28) Catchment D41B: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

C2H045Q01 coord
error Drainage region error for West Driefontein Canal South at Vlakplaa:
Secondary=D4 but station=C2 !

C2H045Q01 coord
error West Driefontein Canal South at Vlakplaa none

Station	total n samples	description	map code
C2H045Q01	coord error	Drainage region error for West Driefontein Canal South at Vlakplaa: Secondary=D4 but station=C2	!
C2H045Q01	coord error	West Driefontein Canal South at Vlakplaa	none

D41B - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(35) Catchment D41J: Total number of "H...Q" (flow gauging, quality) stations = 3.

Station total n
samples description map
code

D4H021Q01 canal Iscor Dewatering Canal at Sacha-Sishen none

D4H020Q01 pump Temporary Pump Station no 1 at Sishen Wa none

C9H014Q01 coord
error Drainage region error for Danielskuil Eye no 1 at Danielskuil:
Secondary=D4 but station=C9 !

C9H014Q01 coord
error Danielskuil Eye no 1 at Danielskuil none

Station	total n samples	description	map code
D4H021Q01	canal	Iscor Dewatering Canal at Sacha-Sishen	none
D4H020Q01	pump	Temporary Pump Station no 1 at Sishen Wa	none
C9H014Q01	coord error	Drainage region error for Danielskuil Eye no 1 at Danielskuil: Secondary=D4 but station=C9	!
C9H014Q01	coord error	Danielskuil Eye no 1 at Danielskuil	none

D41J - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(37) Catchment D41L: Total number of "H...Q" (flow gauging, quality) stations = 7.

Station total n
samples description map
code

D4H011Q01 eye Tsineng Eye at Lower Kuruman 83-Tsineng none

D4H010Q01 eye Bothetheletsa Eye at Bothetheletsa Reser none

D4H006Q01 eye Kuruman B Eye at Kuruman Rensville none

D4H005Q01 eye Kuruman A Eye at Kuruman none

D4H007Q01 eye Manyeding Eye at Manyeding Reserve none

D4H008Q01 eye Klein-Koning Eye at Kono Reserve none

D4H009Q01 eye Groot-Koning Eye at Kono Reserve none

Station	total n samples	description	map code
D4H011Q01	eye	Tsineng Eye at Lower Kuruman 83-Tsineng	none
D4H010Q01	eye	Bothetheletsa Eye at Bothetheletsa Reser	none
D4H006Q01	eye	Kuruman B Eye at Kuruman Rensville	none
D4H005Q01	eye	Kuruman A Eye at Kuruman	none
D4H007Q01	eye	Manyeding Eye at Manyeding Reserve	none
D4H008Q01	eye	Klein-Koning Eye at Kono Reserve	none
D4H009Q01	eye	Groot-Koning Eye at Kono Reserve	none

D41L - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(43) Catchment D73B: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station total n
samples description map
code

D7H008Q01 892 Orange River at Boegoeberg Reserve-Zeeko 33

D7H013Q01 dam Boegoeberg Dam on Orange River: Left Can none

Station	total n samples	description	map code
D7H008Q01	892	Orange River at Boegoeberg Reserve-Zeeko	33
D7H013Q01	dam	Boegoeberg Dam on Orange River: Left Can	none

D73B - Stations used: 1, Samples selected: 195 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 195 7.17 D7H008Q01 8.11 D7H008Q01 8.56 D7H008Q01 9.33 D7H008Q01 -log [H⁺]

Fluoride 195 0.1 D7H008Q01 0.19 D7H008Q01 0.23 D7H008Q01 0.28 D7H008Q01 mg l^-1

NO3(N) 195 0.02 D7H008Q01 0.163 D7H008Q01 0.472 D7H008Q01 1.208 D7H008Q01 mg l^-1

Sulphate 195 4.6 D7H008Q01 21 D7H008Q01 47.3 D7H008Q01 69.6 D7H008Q01 mg l^-1

Chloride 195 5 D7H008Q01 14.5 D7H008Q01 35.6 D7H008Q01 58.1 D7H008Q01 mg l^-1

Sodium 195 5 D7H008Q01 14 D7H008Q01 31 D7H008Q01 43.5 D7H008Q01 mg l^-1

Magnesium 195 4.1 D7H008Q01 10.1 D7H008Q01 16.1 D7H008Q01 19.4 D7H008Q01 mg l^-1

TDS 195 98 D7H008Q01 202 D7H008Q01 304 D7H008Q01 353 D7H008Q01 mg l^-1

Conductivity 195 15.8 D7H008Q01 29.3 D7H008Q01 45.6 D7H008Q01 54.3 D7H008Q01 mS m^-1

Summary of classification: D73B n=195 Class 0

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	195	7.17	D7H008Q01	8.11	D7H008Q01	8.56	D7H008Q01	9.33	D7H008Q01	-log [H⁺]
Fluoride	195	0.1	D7H008Q01	0.19	D7H008Q01	0.23	D7H008Q01	0.28	D7H008Q01	mg l^-1
NO3(N)	195	0.02	D7H008Q01	0.163	D7H008Q01	0.472	D7H008Q01	1.208	D7H008Q01	mg l^-1
Sulphate	195	4.6	D7H008Q01	21	D7H008Q01	47.3	D7H008Q01	69.6	D7H008Q01	mg l^-1
Chloride	195	5	D7H008Q01	14.5	D7H008Q01	35.6	D7H008Q01	58.1	D7H008Q01	mg l^-1
Sodium	195	5	D7H008Q01	14	D7H008Q01	31	D7H008Q01	43.5	D7H008Q01	mg l^-1
Magnesium	195	4.1	D7H008Q01	10.1	D7H008Q01	16.1	D7H008Q01	19.4	D7H008Q01	mg l^-1
TDS	195	98	D7H008Q01	202	D7H008Q01	304	D7H008Q01	353	D7H008Q01	mg l^-1
Conductivity	195	15.8	D7H008Q01	29.3	D7H008Q01	45.6	D7H008Q01	54.3	D7H008Q01	mS m^-1

(46) Catchment D73E: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station total n
samples description map
code

D7H005Q01 379 Orange River at Upington 34

Station	total n samples	description	map code
D7H005Q01	379	Orange River at Upington	34

D73E - Stations used: 1, Samples selected: 109 between 2001-01-01 and 2005-12-31.

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 109 7.64 D7H005Q01 8.21 D7H005Q01 8.37 D7H005Q01 8.86 D7H005Q01 -log [H⁺]

Fluoride 109 0.16 D7H005Q01 0.23 D7H005Q01 0.28 D7H005Q01 1.24 D7H005Q01 mg l^-1

NO3(N) 109 0.02 D7H005Q01 0.075 D7H005Q01 0.426 D7H005Q01 1.572 D7H005Q01 mg l^-1

Sulphate 109 9.3 D7H005Q01 27 D7H005Q01 64.7 D7H005Q01 134.3 D7H005Q01 mg l^-1

Chloride 109 5 D7H005Q01 20.6 D7H005Q01 48.9 D7H005Q01 117.9 D7H005Q01 mg l^-1

Sodium 109 7.8 D7H005Q01 20.8 D7H005Q01 45.2 D7H005Q01 102.7 D7H005Q01 mg l^-1

Magnesium 109 7.1 D7H005Q01 12.3 D7H005Q01 20.7 D7H005Q01 37.8 D7H005Q01 mg l^-1

TDS 109 148 D7H005Q01 242 D7H005Q01 382 D7H005Q01 675 D7H005Q01 mg l^-1

Conductivity 109 21.3 D7H005Q01 35.4 D7H005Q01 57 D7H005Q01 94.5 D7H005Q01 mS m^-1

Summary of classification: D73E n=109 Class 0

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	109	7.64	D7H005Q01	8.21	D7H005Q01	8.37	D7H005Q01	8.86	D7H005Q01	-log [H⁺]
Fluoride	109	0.16	D7H005Q01	0.23	D7H005Q01	0.28	D7H005Q01	1.24	D7H005Q01	mg l^-1
NO3(N)	109	0.02	D7H005Q01	0.075	D7H005Q01	0.426	D7H005Q01	1.572	D7H005Q01	mg l^-1
Sulphate	109	9.3	D7H005Q01	27	D7H005Q01	64.7	D7H005Q01	134.3	D7H005Q01	mg l^-1
Chloride	109	5	D7H005Q01	20.6	D7H005Q01	48.9	D7H005Q01	117.9	D7H005Q01	mg l^-1
Sodium	109	7.8	D7H005Q01	20.8	D7H005Q01	45.2	D7H005Q01	102.7	D7H005Q01	mg l^-1
Magnesium	109	7.1	D7H005Q01	12.3	D7H005Q01	20.7	D7H005Q01	37.8	D7H005Q01	mg l^-1
TDS	109	148	D7H005Q01	242	D7H005Q01	382	D7H005Q01	675	D7H005Q01	mg l^-1
Conductivity	109	21.3	D7H005Q01	35.4	D7H005Q01	57	D7H005Q01	94.5	D7H005Q01	mS m^-1

Processing dam monitoring points:

(1) Checked C3R003Q01 (Barberspan) for valid samples...

Quaternary D73E, dam station: C3R003Q01, Samples selected: 54 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 54 7.59 C3R003Q01 8.76 C3R003Q01 8.91 C3R003Q01 9.07 C3R003Q01 -log [H⁺]

Fluoride 54 0.55 C3R003Q01 0.78 C3R003Q01 0.98 C3R003Q01 1.08 C3R003Q01 mg l^-1

NO3(N) 54 0.02 C3R003Q01 0.04 C3R003Q01 0.073 C3R003Q01 0.306 C3R003Q01 mg l^-1

Sulphate 54 5.8 C3R003Q01 21 C3R003Q01 29.6 C3R003Q01 81.4 C3R003Q01 mg l^-1

Chloride 54 139.3 C3R003Q01 177.2 C3R003Q01 257.6 C3R003Q01 302.4 C3R003Q01 mg l^-1

Sodium 54 143.7 C3R003Q01 183.3 C3R003Q01 250.5 C3R003Q01 291.5 C3R003Q01 mg l^-1

Magnesium 54 12.7 C3R003Q01 39.9 C3R003Q01 53.6 C3R003Q01 58.9 C3R003Q01 mg l^-1

TDS 54 770 C3R003Q01 948 C3R003Q01 1261 C3R003Q01 1445 C3R003Q01 mg l^-1

Conductivity 54 101.2 C3R003Q01 122.6 C3R003Q01 176.6 C3R003Q01 206 C3R003Q01 mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	54	7.59	C3R003Q01	8.76	C3R003Q01	8.91	C3R003Q01	9.07	C3R003Q01	-log [H⁺]
Fluoride	54	0.55	C3R003Q01	0.78	C3R003Q01	0.98	C3R003Q01	1.08	C3R003Q01	mg l^-1
NO3(N)	54	0.02	C3R003Q01	0.04	C3R003Q01	0.073	C3R003Q01	0.306	C3R003Q01	mg l^-1
Sulphate	54	5.8	C3R003Q01	21	C3R003Q01	29.6	C3R003Q01	81.4	C3R003Q01	mg l^-1
Chloride	54	139.3	C3R003Q01	177.2	C3R003Q01	257.6	C3R003Q01	302.4	C3R003Q01	mg l^-1
Sodium	54	143.7	C3R003Q01	183.3	C3R003Q01	250.5	C3R003Q01	291.5	C3R003Q01	mg l^-1
Magnesium	54	12.7	C3R003Q01	39.9	C3R003Q01	53.6	C3R003Q01	58.9	C3R003Q01	mg l^-1
TDS	54	770	C3R003Q01	948	C3R003Q01	1261	C3R003Q01	1445	C3R003Q01	mg l^-1
Conductivity	54	101.2	C3R003Q01	122.6	C3R003Q01	176.6	C3R003Q01	206	C3R003Q01	mS m^-1

(2) Checked C3R004Q01 (Sout Pan) for valid samples...
No data: not classified.

(3) Checked C3R005Q01 (Koppiesyn Pan) for valid samples...
No data: not classified.

(4) Checked C3R001Q01 (Schweitzer Reneke) for valid samples...
Number of samples found = 0: less than the 5 required, so not classified.

(5) Checked C3R006Q01 (Taung) for valid samples...

Quaternary D73E, dam station: C3R006Q01, Samples selected: 228 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 228 7.62 C3R006Q01 8.31 C3R006Q01 8.51 C3R006Q01 8.82 C3R006Q01 -log [H⁺]

Fluoride 228 0.22 C3R006Q01 0.28 C3R006Q01 0.32 C3R006Q01 0.38 C3R006Q01 mg l^-1

NO3(N) 228 0.02 C3R006Q01 0.055 C3R006Q01 0.083 C3R006Q01 2.442 C3R006Q01 mg l^-1

Sulphate 228 2 C3R006Q01 6.8 C3R006Q01 9.8 C3R006Q01 20.4 C3R006Q01 mg l^-1

Chloride 228 5 C3R006Q01 12.1 C3R006Q01 13.8 C3R006Q01 26 C3R006Q01 mg l^-1

Sodium 228 10.5 C3R006Q01 18.6 C3R006Q01 21.7 C3R006Q01 24.5 C3R006Q01 mg l^-1

Magnesium 228 7.7 C3R006Q01 10.1 C3R006Q01 11.3 C3R006Q01 16.4 C3R006Q01 mg l^-1

TDS 228 187 C3R006Q01 235 C3R006Q01 258 C3R006Q01 271 C3R006Q01 mg l^-1

Conductivity 228 24.6 C3R006Q01 31.5 C3R006Q01 34 C3R006Q01 35.9 C3R006Q01 mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	228	7.62	C3R006Q01	8.31	C3R006Q01	8.51	C3R006Q01	8.82	C3R006Q01	-log [H⁺]
Fluoride	228	0.22	C3R006Q01	0.28	C3R006Q01	0.32	C3R006Q01	0.38	C3R006Q01	mg l^-1
NO3(N)	228	0.02	C3R006Q01	0.055	C3R006Q01	0.083	C3R006Q01	2.442	C3R006Q01	mg l^-1
Sulphate	228	2	C3R006Q01	6.8	C3R006Q01	9.8	C3R006Q01	20.4	C3R006Q01	mg l^-1
Chloride	228	5	C3R006Q01	12.1	C3R006Q01	13.8	C3R006Q01	26	C3R006Q01	mg l^-1
Sodium	228	10.5	C3R006Q01	18.6	C3R006Q01	21.7	C3R006Q01	24.5	C3R006Q01	mg l^-1
Magnesium	228	7.7	C3R006Q01	10.1	C3R006Q01	11.3	C3R006Q01	16.4	C3R006Q01	mg l^-1
TDS	228	187	C3R006Q01	235	C3R006Q01	258	C3R006Q01	271	C3R006Q01	mg l^-1
Conductivity	228	24.6	C3R006Q01	31.5	C3R006Q01	34	C3R006Q01	35.9	C3R006Q01	mS m^-1

(6) Checked C9R002Q01 (Bloemhof) for valid samples...

Quaternary D73E, dam station: C9R002Q01, Samples selected: 189 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 189 7.1 C9R002Q01 8.09 C9R002Q01 8.31 C9R002Q01 8.63 C9R002Q01 -log [H⁺]

Fluoride 189 0.21 C9R002Q01 0.34 C9R002Q01 0.42 C9R002Q01 0.5 C9R002Q01 mg l^-1

NO3(N) 189 0.02 C9R002Q01 0.055 C9R002Q01 0.15 C9R002Q01 1.155 C9R002Q01 mg l^-1

Sulphate 189 55.4 C9R002Q01 128.1 C9R002Q01 191.5 C9R002Q01 230.3 C9R002Q01 mg l^-1

Chloride 189 22.3 C9R002Q01 51.3 C9R002Q01 74.6 C9R002Q01 100.5 C9R002Q01 mg l^-1

Sodium 189 24 C9R002Q01 50.6 C9R002Q01 72.8 C9R002Q01 98.7 C9R002Q01 mg l^-1

Magnesium 189 12.5 C9R002Q01 22.2 C9R002Q01 31.8 C9R002Q01 39.5 C9R002Q01 mg l^-1

TDS 189 270 C9R002Q01 409 C9R002Q01 589 C9R002Q01 692 C9R002Q01 mg l^-1

Conductivity 189 39.3 C9R002Q01 63.4 C9R002Q01 88 C9R002Q01 101.1 C9R002Q01 mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	189	7.1	C9R002Q01	8.09	C9R002Q01	8.31	C9R002Q01	8.63	C9R002Q01	-log [H⁺]
Fluoride	189	0.21	C9R002Q01	0.34	C9R002Q01	0.42	C9R002Q01	0.5	C9R002Q01	mg l^-1
NO3(N)	189	0.02	C9R002Q01	0.055	C9R002Q01	0.15	C9R002Q01	1.155	C9R002Q01	mg l^-1
Sulphate	189	55.4	C9R002Q01	128.1	C9R002Q01	191.5	C9R002Q01	230.3	C9R002Q01	mg l^-1
Chloride	189	22.3	C9R002Q01	51.3	C9R002Q01	74.6	C9R002Q01	100.5	C9R002Q01	mg l^-1
Sodium	189	24	C9R002Q01	50.6	C9R002Q01	72.8	C9R002Q01	98.7	C9R002Q01	mg l^-1
Magnesium	189	12.5	C9R002Q01	22.2	C9R002Q01	31.8	C9R002Q01	39.5	C9R002Q01	mg l^-1
TDS	189	270	C9R002Q01	409	C9R002Q01	589	C9R002Q01	692	C9R002Q01	mg l^-1
Conductivity	189	39.3	C9R002Q01	63.4	C9R002Q01	88	C9R002Q01	101.1	C9R002Q01	mS m^-1

(7) Checked C3R002Q01 (Spitskop) for valid samples...

Quaternary D73E, dam station: C3R002Q01, Samples selected: 79 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 79 7.57 C3R002Q01 8.29 C3R002Q01 8.59 C3R002Q01 8.81 C3R002Q01 -log [H⁺]

Fluoride 79 0.37 C3R002Q01 0.56 C3R002Q01 0.67 C3R002Q01 0.72 C3R002Q01 mg l^-1

NO3(N) 79 0.02 C3R002Q01 0.174 C3R002Q01 0.422 C3R002Q01 3.162 C3R002Q01 mg l^-1

Sulphate 79 176.4 C3R002Q01 265.4 C3R002Q01 379.7 C3R002Q01 408.4 C3R002Q01 mg l^-1

Chloride 79 95.9 C3R002Q01 153 C3R002Q01 200.2 C3R002Q01 259.6 C3R002Q01 mg l^-1

Sodium 79 79.1 C3R002Q01 131.6 C3R002Q01 164.1 C3R002Q01 195.2 C3R002Q01 mg l^-1

Magnesium 79 37.2 C3R002Q01 61.2 C3R002Q01 74.7 C3R002Q01 87.6 C3R002Q01 mg l^-1

TDS 79 659 C3R002Q01 867 C3R002Q01 1108 C3R002Q01 1200 C3R002Q01 mg l^-1

Conductivity 79 92.9 C3R002Q01 125 C3R002Q01 170.1 C3R002Q01 192 C3R002Q01 mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	79	7.57	C3R002Q01	8.29	C3R002Q01	8.59	C3R002Q01	8.81	C3R002Q01	-log [H⁺]
Fluoride	79	0.37	C3R002Q01	0.56	C3R002Q01	0.67	C3R002Q01	0.72	C3R002Q01	mg l^-1
NO3(N)	79	0.02	C3R002Q01	0.174	C3R002Q01	0.422	C3R002Q01	3.162	C3R002Q01	mg l^-1
Sulphate	79	176.4	C3R002Q01	265.4	C3R002Q01	379.7	C3R002Q01	408.4	C3R002Q01	mg l^-1
Chloride	79	95.9	C3R002Q01	153	C3R002Q01	200.2	C3R002Q01	259.6	C3R002Q01	mg l^-1
Sodium	79	79.1	C3R002Q01	131.6	C3R002Q01	164.1	C3R002Q01	195.2	C3R002Q01	mg l^-1
Magnesium	79	37.2	C3R002Q01	61.2	C3R002Q01	74.7	C3R002Q01	87.6	C3R002Q01	mg l^-1
TDS	79	659	C3R002Q01	867	C3R002Q01	1108	C3R002Q01	1200	C3R002Q01	mg l^-1
Conductivity	79	92.9	C3R002Q01	125	C3R002Q01	170.1	C3R002Q01	192	C3R002Q01	mS m^-1

(8) Checked C9R001Q01 (Vaalharts) for valid samples...

Quaternary D73E, dam station: C9R001Q01, Samples selected: 103 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable n
samples Minimum recorded
at Median recorded
at 90th
percentile recorded
at Maximum recorded
at unit

pH 103 7.47 C9R001Q01 8.11 C9R001Q01 8.31 C9R001Q01 8.67 C9R001Q01 -log [H⁺]

Fluoride 103 0.23 C9R001Q01 0.35 C9R001Q01 0.42 C9R001Q01 0.47 C9R001Q01 mg l^-1

NO3(N) 103 0.02 C9R001Q01 0.04 C9R001Q01 0.106 C9R001Q01 1.53 C9R001Q01 mg l^-1

Sulphate 103 51.2 C9R001Q01 142.3 C9R001Q01 201.8 C9R001Q01 230.6 C9R001Q01 mg l^-1

Chloride 103 22.8 C9R001Q01 55.6 C9R001Q01 79 C9R001Q01 96.8 C9R001Q01 mg l^-1

Sodium 103 23.9 C9R001Q01 55.9 C9R001Q01 76.8 C9R001Q01 91.8 C9R001Q01 mg l^-1

Magnesium 103 13.2 C9R001Q01 23.5 C9R001Q01 32.7 C9R001Q01 35.8 C9R001Q01 mg l^-1

TDS 103 277 C9R001Q01 480 C9R001Q01 628 C9R001Q01 709 C9R001Q01 mg l^-1

Conductivity 103 38.7 C9R001Q01 72.1 C9R001Q01 91.5 C9R001Q01 100.7 C9R001Q01 mS m^-1

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	103	7.47	C9R001Q01	8.11	C9R001Q01	8.31	C9R001Q01	8.67	C9R001Q01	-log [H⁺]
Fluoride	103	0.23	C9R001Q01	0.35	C9R001Q01	0.42	C9R001Q01	0.47	C9R001Q01	mg l^-1
NO3(N)	103	0.02	C9R001Q01	0.04	C9R001Q01	0.106	C9R001Q01	1.53	C9R001Q01	mg l^-1
Sulphate	103	51.2	C9R001Q01	142.3	C9R001Q01	201.8	C9R001Q01	230.6	C9R001Q01	mg l^-1
Chloride	103	22.8	C9R001Q01	55.6	C9R001Q01	79	C9R001Q01	96.8	C9R001Q01	mg l^-1
Sodium	103	23.9	C9R001Q01	55.9	C9R001Q01	76.8	C9R001Q01	91.8	C9R001Q01	mg l^-1
Magnesium	103	13.2	C9R001Q01	23.5	C9R001Q01	32.7	C9R001Q01	35.8	C9R001Q01	mg l^-1
TDS	103	277	C9R001Q01	480	C9R001Q01	628	C9R001Q01	709	C9R001Q01	mg l^-1
Conductivity	103	38.7	C9R001Q01	72.1	C9R001Q01	91.5	C9R001Q01	100.7	C9R001Q01	mS m^-1

Summary of dam (or lake) classifications, with classification variables, if any. Click on a dam station to go to the classification data.

Dam
station number class Class I
variable Class II
variable Class III
variable

C3R003Q01 54 2 Mg Cl Na TDS EC

C3R006Q01 228 0

C9R002Q01 189 1 Mg TDS EC

C3R002Q01 79 2 SO4 Na Cl Mg TDS EC

C9R001Q01 103 1 SO4 Mg TDS EC

Dam station	number	class	Class I variable	Class II variable	Class III variable
C3R003Q01	54	2	Mg	Cl Na TDS EC
C3R006Q01	228	0
C9R002Q01	189	1	Mg TDS EC
C3R002Q01	79	2	SO4 Na	Cl Mg TDS EC
C9R001Q01	103	1	SO4 Mg TDS EC

Finished calculations for Lower Vaal WMA at 2006-12-18 - 15:57:33

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